Culvert.



A.. H. KAUFMANN.

GULVBRT.

APPLICATION FILED JULY e, 1910.

988,109. l Patented Mar.28, 191-1.

mom/frs .ADOLPH HENRY KAUFMANN, 0F GTHRIE, OKLAHOMA.

' cULvEnT.

Specication of Letters Patent.

Patented Mar. 28, 1911.

Application led July 6, 1910. Serial No. 570,544.

To all whom it may concern:

Be it known that I, ADOLPH H. KAUF- MANN, a citizen 0f the United Sta-tes, and a resident of Guthrie, in the county of Logan and State of Oklahoma, have invented certain new and useful Improvements in Culverts, of which the following is a specification.

This invention is an improvement in cor# rugated sheet metal culverts andrelates particularly to the means for spreading and contracting the same so they may be conveniently joined together and may be shipped in sections; and the invention consists in certain novel constructions and combinat-ions of parts as will be hereinafter described and claimed.

In the drawing Figure l is a cross section and Fig. 2 is a top plan View, part-1y broken away, of a culvert provided with my improvements. Fig. 3 'is a cross section on about line 3-3 of Fig. l. Fig. 4 is a'detail perspective view of one of the recessed blocks.

By my invention, I provide for spreading the split end of a corrugated culvert section so a meeting section may be iitted in such end of the split section and the latter may then be contracted upon the meeting section and in doing this, I provide the corrugated section A on opposite sides of its lapped joint A with recessed blocks B riveted or otherwise secured at B to the culvert section and having their body portions B2 provided with recesses B3 open at their outer ends and formed to receive nuts C, the recesses B3 being angular so .the nuts when fitted therein will be held from turning. The opposite walls B4 and B5 of the recesses B3 are provided withslots B and B7 for the passage of the screw D which has its ends threaded, one right and the other left and engaged with the corresponding nuts so the turning of the screw D by its head D will operate to draw the recessed blocks toward each other or to force-them apart according to the direction in which the screw D is turned. The slots B7 permit the extension of the screw D beyond the body portion ofl the recessed blocks, while the outer walls of the slots are closed and prevent any displace- 'ment of the screw, and the form of the recesses B3, as before described, operates to prevent the nuts from turning so the screw may be manipulated to contract 0r expand the culvert` section as desired.

I claim:

l. The combination of a split culvert section, blocks on opposite sides of the joint thereof and having body portions recessed in their outer sides and having said recesses non-circular and having the inner and outer walls of the recesses provided with slots foi` the passage of an operating screw, nuts f1tting in said recesses and conforming thereto whereby they are held from turning and having their threaded openings in alinement with the inner and outer slots in the walls of the recesses and, a right and left screw having a central head portion and having the laterally 'extending threaded portions operating in their respective nuts and extending` through the slots in the inner and outer walls of the recesses receiving said nuts, substantially as set forth.

2. The combination with the recessed blocks having the inner and outer walls of their recesses slotted for the passage ofthe operating screw, nuts fitting and held from turning in the recesses of the blocks and an operating screw having right and left threads operating in their respective nuts, substantially as set forth.

3. The combination of a culvert section having a longitudinal joint, blocks on opposite sides thereof and provided in their outer sides with recesses and nuts fitting loosely therein and held from turning, the inner and outer walls of said recesses being slotted and a right and left screw having its threaded portions turning in the nuts and eXtendlng through the slots in the inner and outer walls of the nut receiving recesses, substan tially as set forth.

ADOLPH HENRY KAUFMANN. Witnesses:

JOHN D. CHAPPELLE, MABEL L. GLovER. 

